• Adapter Only for Dual Position Lights
    • Adapter Only for Dual Position Lights
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    Adapter Only for Dual Position Lights

    Vendor: Brightsource Type: Wiring
    This adapter goes between a Siberia light (with DT4 Connector) and a BrightSource relay harness (with DT2 connector). One adapter is required for each light. The BrightSource wiring harness operates...
    $20.00
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    This adapter goes between a Siberia light (with DT4 Connector) and a BrightSource relay harness (with DT2 connector). One adapter is required for each light.

    The BrightSource wiring harness operates the main beam of the light only. The yellow and white wires on the adapter operate the dual white/amber position light. You will need connect this to the appropriate power source (ie, parking lights) or extend the two wires and install a separate switch to change the individual position light colour.

    We do not supply extension wires or switches

    BrightSource harnesses are available for single lights or pairs:

    BrightSource relay harness for single light: 72999

    BrightSource relay harness for two lights: 73240

    Why Buy From Union Overland?

    Union Overland is owned and operated by Marc, an overland enthusiasts who actively use the gear we sell. We don’t just list products; we test them, understand them, and stand behind them. When you order from us, you’re dealing directly with real people who care about your setup and experience.
    Fitment & Compatibility

    Fitment details are listed in the product description above. If you’re unsure whether this product will work with your vehicle, tonneau cover, or existing setup, reach out before ordering. We’re happy to help confirm compatibility so you can order with confidence.

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    We ship from Canada and aim to process orders as quickly as possible. Some items may be listed as pre-order; estimated timelines are shown on the product page when applicable. If you have questions about shipping timelines, returns, or order status, just reach out — we’re here to help.
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    We carefully select and sell products that meet our standards for durability and performance. All products are backed by manufacturer warranties. If you ever need help with installation, support, or warranty questions, Marc and Jake are here to assist.

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